"Hezbollah is a source of pride for the Muslim and Arab world, and it will triumph over all these threats and animosities," he said.

Velayati was referring to a recent move by some Arab countries to blacklist Hezbollah as a terrorist organization.

Velayati, who is also the head of the Center for Strategic Research of Iran's Expediency Council, reiterated the Islamic Republic's unwavering support for the oppressed nations in the region.

Nasrallah briefed the Iranian official on the latest regional developments.

On March 2, the six-nation (Persian) Gulf Cooperation Council issued a statement labeling Hezbollah a terrorist organization. The bloc comprises Saudi Arabia, Qatar, the UAE, Oman, Bahrain and Kuwait.

Reacting to the decision, Hezbollah described the (P)GCC member states as "reckless and hostile", blaming Saudi Arabia for the move.

The decision followed recent victories by the Syrian Army, which is backed by Hezbollah in its battle against militants fighting to topple the Syrian government.

Algeria refused to classify the movement as a terrorist organization.

Palestinian resistance movement, Islamic Jihad, also praised Hezbollah as a resistance movement, which has a history of struggle against the Zionist entity as well as support for the Palestinian cause.

Iran, Syria and Yemen's Houthi Ansarullah movement have also slammed the move by the [P]GCC.